Machine for bending wire



2 Sheets-Sheet 1. H. M A R T Y N Machine-for Bending Wire. No.227,804'.l l Patented May 18,1880.

N-FEERS PMUTWLIYHUGRAPHER, WASHlNmDN, D.C.

2 imeetsss--Sh'eeiil 2 n. MARTYN. Machine for Bending Wire. No. 227,804.A Patented May I8, i880.

I l l l i i I l W 'i r L .J 7 Z KPETERS. PHOTO-LITHOGRAPNER,WABIIIKG'BN. DA

UNITED STATES PATENT lErica.

HENRY MARTYN, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR BENDING WIRE.

SPECIFICATION forming part of Letters Patent No. 227,804, dated May 18,1880.

Application filed February 2, 1880.

To all whom it may concern Be it known that I, HENRY MAETYN, a subjectof the Queen of Great Britain and Ireland, residing inPhiladelphia,Pennsylvania, (and having resided in the United Statesduring the whole of the past year, and taken the oaths prescribed by lawfor becoming naturalized in this country,) have invented certainImprovements in Devices or Machinery for Bending Wires, of which thefollowing is a speeieation.

The object of my invention is to construct a machine for accurately andrapidly bending Wires to quadrangular shape over a former, an objectwhich I attain in the manner and by the devices too fully explainedhereinafter to need preliminary description.

In the accompanying drawings, Figures 1 and 2 are perspective views ofone of the simplest forms of my im'proved wire-bending device, Fig. 3, avertical section of Fig. l; Fig. 4, a longitudinal section of anorganized machine constructed according to my invention and adapted forbending wires around a rectangular former 5 Fig. 5, a view of the samecharacter as Fig. 4, but with the working parts in a 'different positionFig. 6, a transverse section of Fig. 4 on the line 1 2; Fig. 7,' asectional plan of Fig. 5 on the line 3 4, and Fig. 8 a modiiicationofpart of my invention.

In Figs. 1, 2, and 3, which illustrate my invention as applied to .asimple hand-tool for application to a work-bench, A is a frame, securedto or forming part of which is a former, B, having, in this instance,two faces, c and a', at right angles to each other, both faces beingprovided with a series of semicircular grooves, and the grooves of oneface communicating with those ofthe other.

D is a guided plate arranged adjacent to the face a of the formerB, andacted o'n by a camlever, E, so that when' a number of wires are insertedin the grooves ot' the facec the said plate may be caused to press uponsaid wires and retain them firmly in position.

To suitable guides in the frame A, parallel with the face a ot' theformer B, is adapted a block,F, which canbe caused to move to and fro inthe guides by operatin g a lever, b, which is connected to the blockFfthrough the medium of a link, d. The lower edge of the said block andthe inner face of the same are furnished with grooves which coincidewith those inthe faces a, and a ot' the former B, and the lower edge ofthe block is beveled, fora purpose eX- 5 5,

plained hereinafter.

The operation of bending wires with this device is as follows: The wiresare placed in the grooves yof the face a ot' the former B and clampedtherein by operating the lever E and 6o plate l), the ends of the wiresprojecting beyond the face a', as shown in Fig. 1. The lever b isoperated so. as to cause the descent of the block F, the lower edge ofwhich acts upon the projecting portions ot' the wires, bending 65 themdown and pressing them into the grooves of the face a oi" the former B.

Owing to the lieveling ot' the lower edge of the block F the wires areacted upon in succession, so that the eort required to bend the 7o wireswill be less than if all the wires were acted on simultaneously.

The grooves in the block F and former B serve to guide the wires andkeep them in proper lateral position, the grooves alsol permitting theproper bending ot' the wires withoutabradin g, iiattenin g, orindent-ing the same.

After the wires have been bent, as above described, the block F israised, and the wires released and readjusted prior to a repetition 8oof the above-described operation.

Figs. 4, 5, and 7 represent an organized machine for bending wires to aquzulrangular form without the necessity of removing and replacing thesaid wires.

The quadrangnlar former B is hollow and dctachably secured to aprojectiomf, secured to or forming part of the base A of the machine. Tothe top of the former B are secured frames in which are guides for theclamp- 9o ing-plates 1') D and bearin gs for the cam-levers E, by meansof which said plates are operated.

Vertical standards G Gr are secured to the base A, and to guides inthese standards are adapted slides J J, the lower ends of the lat- 95ter carrying horizontal frames G' G', to which are adapted slides J J'.The lower ends ot the slides J and the inner ends of the slides J arefurnished with grooved blocks F, similar to those shown in Figs. 1, 2,and 3. The Ico slides' J are provided with racks into which gear pinionson shafts m, carried by the frames G', and each of the slides J isslotted vertically, one side of the slot being provided with a rack intowhich gears a pinion on a horizontal shaft, a, carried by a bearing onone of the standards G, and arranged to both turn and slide in a bearingon the opposite standard, to which the pinion is confinedlongitudinally, the shaft having a groove and the pinion a feather, inorder to permit the desired adjustment of the frames.

In bending wires with the above-described machine the shafts m and a arefirst operated so as to move the slides J outward and the slides Jupward to their full extent, as shown in Fig. 4. A former, B, of thedesired size having been applied to the projection j', the standards G Gare adjusted to positions adjacent to the sides of said former andsecured at'ter adjustment. The wires are placed on the top of the formerand clamped thereto, the ends of the wires projecting on both sides ot'thc former, as shown in Fig. 4.

The shaft a is then operated so as to cause the descent of the slides Jand the bending of the projecting portions of the wires down against thesides ofthe former B by the blocks F of said slides.

lVhen the slides J reach the limit of their downward movement the shaftsm are operated so as to cause an inward movement of the slides J', theblocks F of which bend, the projecting ends of the wires beneath theformer, on the under side of which the opposite ends of the wires meet.In order to in sure the application of pressure to the wires throughouttheir entire length, the blocks F of the slides J are beveled inopposite directions, as shown in Fig. 7.

When the wires have been thus bent the slides J are retracted, theslides J and the parts carried thereby elevated, and the wires releasedfrom the control of the clampingplates D and removed from the former Bin the direction of the arrow, Fig. 6', prior to the insertion of afresh set of wires and a repetition ci' the operation.

In order to permit the lateral removal of the wires from the former Bthe latter should have plain surfaces, the clamping-plates D beinggrooved, and the grooves in the bendingblocks being of a depth sultcientto receive the wire without attening, abrading, or indenting the same.

I do not wish to claim the carrying of the guides G' by the slide J; nordo I limit myself to such construction, as the slides J may, if desired,be guided directly in the bed A, as shown in Fig. 8, or the slide may beguided in a frame hung to the under side of the bed, so as to be readilyswung into or out of operative position. Neither is my inventionconfined to the particular construction of guides and mechanism foroperatic g the slides or blocks shown and described, as this mechanismmay be varied in numerous ways without departing from the essentialfeature of my invention, although I may say that the lever andrack-aml-pinion devices shown in connection with the two forms of myinvention are preferred, as they have been found to answer well inpractice.

I do not desire to claim, broadly, the bending of a wire or wires over aformer by means of a sliding block, as machines have heretofore beenconstructed in which this has been done; but

I claim as my inventionl. The combination of a ri ght-angled former, adevice for clamping wires to one of the faces of said former, guidesparallel with the other face of the same, a block adapted to saidguides, and means for reciprocating the block therein and over the faceof the former, the inner face of the block having a series of grooves bywhich the wires are guided as they are bent, and in which, afterbending, the wires are contained, as set forth.

2. The combination ot'a right-angled former, a device for clamping wiresto one ofthe faces of said former, guides parallel with the other faceof the same, a block adapted to said guides, and means for reciprocatingthe block therein and over the face of the former, both the outer faceof said forlner and the 'inner face of the block having a series ofgrooves for the guidance and reception of the wires, as set forth.

3. The combination of a rectangular former, devices for clamping wiresto the top of the same, bending-blocks adapted to guides parallel withthe sides of the former, other bending-blocks adapted to guides parallelwith the bottom ofthe same, and means, substantially as described, forreciprocating said bendingblocks in the guides and over the faces of theformer, as specified.

4. The combination of the main frame, the rectangular former detachablysecured thereto, laterally-adjustable guiding-frames G, carrying slidesJ, with blocks F, and horizontal guides, to which are adapted slides J,with blocks F, all substantially as set forth.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

HENRY MARTYN.

Witnesses:

J Arras ToBIN, HARRY SMITH.

IOO

IIG

